The objective of this research is to study the implementing the agricultural residue to the design of outdoor paving block for lowering the building temperature. The base layer admixture (layer no.1) is selected from cement type1: quarry dust: rice husk: rice straw: water ratios equal to 1: 3: 0: 0: 0.3 1: 1: 0: 1: 0.5 1: 1. 0.25: 0.75: 0.5 1: 1: 0.5: 0.5: 0.5 1: 1: 0.75: 0.25: 0.5 and 1: 1: 1: 0: 0.5 by weight. The surface layer admixture (layer no.2) is white silica cement: yellow stone chip no.4: water equals to 1: 4: 0.3 by weight. The exterior floor-covering blocks were tested following density testing water absorption testing compressive testing and surface temperature testing compare with laterite sandstone paving concrete block marble and granite. Resulting the best ratio of cement type1: quarry dust: rice husk: rice straw: water is 1: 1: 0.75: 0.25: 0.5 that has properties at 28 days following 1939.43 kg/m of density 14.97 % of water absorption 284.69 ksc of compressive strength and lower than other paving blocks around 3 – 13 degrees Celsius of surface temperature

The study of the Knowledge and Participation in Saving Electric Energy of Students and Staffs at Rajamangala University of Technologh Phra Nakhon aimed to find out and compare the level of knowledge and participation in electric energy saving. The population consisted of 865 subjects. The questionairs are desiged for rating five scales check. The reference statistics for data analysis included frequency percentage arithematic mean standard deviation t-test and one way anova respectively.

his project presents a power flow analysis model for the purpose of studying power flow in a power system model. At present electric power is an important factor driving the country both in industry and transportation. The demand for electric power tends to increase the production is insufficient to meet the demand. Therefore it is necessary to make the most of the energy resources available in the system. An effective system must be analyzed to detect possible errors. A sudden increase or decrease in load in the system may result in inadequate production and distribution efficiency. Therefore this project is presented for the analysis of power flow in a 3 bus 5 bus and 30 bus power system model using a math simulation program. It is divided into 3 case studies: Case 1 power flow under normal conditions Case 2 transmission line disconnection Case 3 adding distributed power generation sources.

This paper presents the design of a power harvester for passive RFID Tags. An impedance matching circuit chooses a high-pass L network inserted between the antenna and rectifier circuit to maximize the power transferred to Tags using an impedance transformation technique. A simple circuit including only a shunt inductance was selected as a matching. The rectifier utilizes a Self-Vth-Cancellation (SVC) circuit is an archived self-threshold voltage cancellation and self-power regulation function with a simple circuit design. An antenna is modeled as an RF source with a series impedance Zs of 50Ω while the rectifier is modeled as a load impedance ZL which is estimated from the process and design parameters of the NMOS and PMOS transistors used in the SVC rectifier. As the combined circuit was simulated using input in the UHF band of 953 MHz and the devices’ model of the 0.35μm CMOS technology. The simulation results were compared with the single-stage rectifier of the SVC technique in the issue of the Power Conversion Efficiency (PCE). The achieved DC output of the rectifier yields the power conversion efficiency of 43.7% at input RF power -10.22dBm while a DC output voltage of around 643.8mV and a current load of 64.4μA.

This Project presents electric bicycle. The structural feature is the use of the bicycle to be modified as it is designed to spin the rotor of the 5-phase magnetic line generator set and test the voltage distribution. The principle of operation of electric bicycles relies on the mechanical energy gained from cycling. The rotor consists of a series of permanent magnetic poles intersecting with a stator consisting of a set of conductor coils generating an AC voltage and converting it from AC to DC through a diode bridge to obtain DC voltage. To be connected to the boost converter to increase the output side pressure level to get the right voltage to charge a 12 volt battery. batteries. The test has been tested for cycling to generate electricity at a speed of 400 rpm while no-load has a voltage of 23.3 volt and with a load per load and at a speed of 400 rpm the voltage is 12.1 volt If the bicycle is cycled at an increased speed the voltage and current will increase. In order to transmit electric power to the single-phase power system an inverter is used to connect the single-phase power system to transmit to the single-phase power grid.